Gumming machine



Oct. 9, 1951 J. P. GUERRA 2,570,544

GUMMING MACHINE Fil ed Dec. 23, 1946 5 Sheets-Sheet l N .u t

hm zm Oct. 9, 1951 J.' P. GUERRA GUMMING MApHINE Filed Dec. 23, 1946 5 Sheets-Sheet 2 och 1951 J. P. GUERRA 70,

GUMMING mcum:

Filed Dec. 23, 1946 5 Sheets-Sheet 3 1951 J. P. GUERRA 2,570,544

GUMMING MACHINE Filed Dec. 23, 1946 5 Sheets-Sheet 4 J. P. GUERRA GUMMING MACHINE Oct. 9, 1951 5 Sheets-Sheet 5 Filed Dec. 23, 1946 pressure car with its rollers.

Patented Oct. 9 1951 UNITED STATES PATENT OFFICE Application December 23, 1946, Serial No. 718,054

In Cuba April 11, 1946 2 Claims. (01. 21s. 2o

-" My invention relates to sewing machines to which certain modifications are made to couple a gumming device, the functioning of which is made to synchronize with that of the machine, thus permitting the gumming of the back or middle of the books, note-books, blocks or copybooks, besides the sewing performed by the machine, to be made in a single operation. This, until now, has been performed separately, resulting in consequent loss of time'and money, due to the necessity of employing extra labor as required by the method in vogue.

For a better understanding of the mechanism of the machine in question, I shall refer tothe attached drawings, in which identical parts have been described with the same reference numbers.

Figure 1 is an elevated side view of the auxiliary gummed device. Fig.2 shows the sewing machine in elevated side viewwith the synchronic mechanism coupled, exhibiting how the gummed strip of the gummingdevice passes on to themachine. Fig.3 is a ground plan of the Fig. 4 gives a side view of the mechanism which is coupled to the sewing machine. Fig. 5 shows a lateral view, contrary to the view given under Fig. 2, of the sewingv machine and gumming device coupled to it, showing conspicuously the means of synchronizing the functioning of both. Figure 6 is a frontview. of the gumming mechanism. ,Fig. '7 gives a front view of the machine with the gummingmechanism coupled. Fig. 8 is a ground plan of the entire outfit-sewing machine with 7 thumb screw 9.

apparatus'for gummingdevice coupled. F. 9

is a view in perspective of the sewing machine as it sews the booklets.

Theobject of the gumming device is to lay on the gum on one of the surfaces of the strip that has to be adhered to'the article that is being sewed in the machine and to continue feeding the machine, without effort, with just what it requires. It consists of a tank or recipient shown in the drawings with the number 4, in which the gum is placed. This tank is provided with a support, l2; behind the tank there is a tripod 3 which supports the roll of strip I, held by: the lateral crossarms l joinedby horizontal axis. One endof the stripis made to pass'under a crosspiece 5 arranged on the tank and supported by posts fixed to the sides of it. Said crosspiece sustains a lug, the forward end of which falls won a u d 911 1fi.haYina an at its s. rotatively supported from uprights extending from the sides of the tank, through which the strip passes on its way between another two rollers-an upper roller 1 (also a guide-roller) and a lower roller 8, which can be placed on top or at variable distances relative to a cylinder ID of greater diameter. This adjustment of rollers 1 and 8 being accomplished by-means of small levers fixed at one end of the axisand a Cylinder Iii, rotating uponits axis, is mounted in such manner that the lower portion thereof is submerged in the liquid gum contained in the tank and, uponrotating, carries adhered to its surface a certain quantity of said gum, which may be graduated by adjusting the position of roller 3 with respect to the cylinder. The strip, upon passing under guide roller 1, the lower portion of which remains at a lower level than the upper portion of cylinder I0, is

deflected upwards and comes in contact with the cylinder 10, thus acquiring on its lower surface a certain quantity of the gum which said cylinder I0 carries on its exterior surface. .The strip then again descends under another auxiliary guide roller ll supported from the tank sides, and continues outside and beyond the tank towards the mechanism which is coupled to the sewing machine. l

The body of sewing machine 26 isprovided with its base 25 and wheels with groove or pulleys for receiving the impulse of a motor (not shown), by means of a belt 38 (Figs. 2 and 5).

At the side of the power receiving wheel of the body of the sewing machine, a small pulley 31 is provided for rotation with the power receiving wheel, which by means of belt 46 transmits its rotary movement to a lower pulley 2| with axis 45 that has its support 44 fixed to the table or panel of the machine. rotary movement through axis 45 and end pinion 40 to a pinion roller fixed to its axis I8, by means of intermediate pinions l9 and 20, having their axes 39 resting in journal bearings or perforations made in fishplates 43 fixed to the table of the machine.

;In front of the rollerwith fixed pinion l8, there is another roller ii, the position of which relative to the roller with fixed pinion I8 is controlled by a screw 24, the nut 32 of which, is fixed to the table of the machine, and the forward end of said roller pulls in its onward or backward movement, a piece 33 that serves as a support for the axis of roller I! which, consequently, can be made to approach roller I8 or to recede from it at will, in order to graduate the tension of a continuous felt band l6 that borders externally both rollers and moves while roller l8 15 m motionfmaking roller l1 rotate also upon its axis. Both rollers I! and I8 are so positioned that their upper portions extend into openings or Pu11ey2l transmits its passes under the panel or table of the machine and, guided by roller or wheel with groove '23 sustained on a fixed support to the table, conitinues on to the next roller or wheel with groove 22, sustained by support 36, to which itedge's and changes the direction of its movementthereby, presenting at the same time the gummed surface upwards. Upon leaving roller 22, it comes in contact with felt 16 upon which it is seated and passes like the latter, over the table at the portion comprised between the rollers l1 and I8. This is the point at which the gummed strip adheres to the note-books, blocks, etc., sewed in the machine. I

In fact, the belt band It moves in a direction aligned with the sewing piece of the machine, and upon the forward movement of the block or note-book, as the sewinggoes on, it situates the stitched part precisely over the gummed surface of the strip, as will be seen in Fig. 8, and continues advancing over the same by the movement of the felt band.

The pressure which the sewed object requires in order that the gummed strip may be sufficiently adhesive, is transmitted to it by a pressure car, Fig. 3, composed of a set of sixrollers, five of which, No. I4, are of greater diameter than that which is situated nearer the sewing machine, indicated by the number I5. The roller 15 only engages the article or booklet and therefore need not exert as great pressure as the other rollers. All of these rollers are situated between the fishplates 35, with their axis resting in openings made in same, said fishplates being united by horizontal crosspieces, twoof which carry perpendicularly fixed, two posts or poleswhich sustainat their upper ends, a rod !3, to which are associated the fore ends of two arms 28 with reinforcing crosspieces 29 and detachable pin 3| which passes through the perforations of the rear ends of arms 28, and the hinges 21 held in position by screws to the panel or table-, thus permitting the lifting of the pressure car.

the booklet, for which purpose there is at one end a person who, upon cutting the thread that stitches the booklet, cuts at the same time'the' strip which gums at the ridge of the same, so as to avoid having to perform this extra labor separamy.

' From the foregoing explanation, it is seen that as the sewing progresses, the gummed strip is laid on, covering the seam of the article sewed, automatically and synchronically, one person only being required for cutting the gummed strip when the object sewed comes out from under the pressure car.

Slight modifications may be made without altering the spirit of the invention, for which reason the patent which I solicit should devolve upon the reach of the following.

I claim:

1. Apparatus for feeding an article and a tried element past pressure mechanism for causing the gummed element to adhere to the article, said pressure mechanism including a unitary frame rotatably carrying a plurality of pressure rollers arranged in alignment with the direction of travel of the article and gummed element, and the roller fat the end of the frame toward which thearticle and gummed element travel being of reduced diameter relative tothe other rollers, and a freely pivotedsw inging sup; porting framework connected to said unitary frame, said swinging framework pivoted on an axis parallel to the direction of travel of the article/and gummed element at points laterally disposed reiative to said path of travel, said framework having freedom of swinging movement in following the surface contour of the article and gummed element as they pass in con tact with the pressure rollers. I

2. Apparatus for feeding an article and a gummedcelement from different positions into juxtaposed position on mechanism for feeding the article and gummedel'ement past, pressure mechanism for causing the gummed elementto adhere to the article, 's'aidpressuremechanism including a unitary. frame rotatably carrying a plurality of pressure rollers arranged in alignment with thedirection of travel of the article and gummed element, andthe' roller at the 'end of the frame toward which the article and gummed element travel being of reduced di"-' ameter relative to the other rollers,.and posi tio'ned so that it contacts only the article,.while the remaining .rollers contactthe article and exert .pr'essure on the article and the gummed element, and a freely pivotedswinging support= ing framework connected to said unitary frame, said swinging framework pivoted on an axis parallel to the direction of J travel of the article and gummed element at points laterally disposed ren -give to said path of'travel', said framework having freedom. of movement in following the surface contour of the article and gummed-e16 mer t as they pass in contact with the pressure rollers. 1 v

JosE PELAEZ' GUERRA.

REFERENCES CITED The following references are or record. in the: manor this patent:

UNITED STATES PATENTS 

